CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 08/04/2017 05:03 PM, Eggebrecht, Adam wrote:
> Hello cgal-discuss,
>
>
>
> Out lab is using cgal to generate dense meshes of human heads to model
> photon propagation. Generally speaking, the meshes are very nice.
> However, when the mesh sizes hit around 1,000,00 nodes, the meshes start
> to exhibit problems with poor tetrahedral and open surfaces.
>
>
>
> I am happy to provide more details, but wanted to first reach out to see
> if this type of error has been observed by others and if there are
> general fixes. We are generating meshes on Linux machines with >250GB
> RAM (e.g., 1 computer is running CentOS 6.4 and has 8 Intel Xeon E5607
> processors).

In general, the more nodes you have, the better the mesh should be.
About the poor quality tetrahedra I was thinking maybe it's a matter
of run time of the optimizer since the more vertices you have the more
time you need but the pb with open surfaces is strange.
I would advise to open a detailed issue on github [1] and we will look 
into it. You can post the link to the issue in the thread so that people
interested can follow the discussion.

Thanks,

Sebastien.

[1] https://github.com/CGAL/cgal/issues

> Thank you,
>
> Adam
>
>
>
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